Industrial EtherNet/IP Connectivity for On-Machine Distributed I/O Systems
The Allen Bradley 1738-AENT ArmorPOINT EtherNet/IP Adapter is a rugged industrial communication module designed to connect ArmorPOINT I/O systems directly to EtherNet/IP control networks. Built for distributed machine-level automation, this adapter delivers reliable high-speed communication while supporting decentralized I/O deployment in harsh industrial environments.
Engineered for on-machine installation, the 1738-AENT reduces the need for large centralized control cabinets by enabling I/O modules to operate closer to field devices. Its robust sealed housing and industrial-grade network performance make it ideal for manufacturing systems exposed to vibration, dust, moisture, and demanding operating conditions.
The adapter supports efficient communication between ArmorPOINT I/O modules and Allen Bradley control platforms including ControlLogix and CompactLogix systems, helping improve wiring efficiency, machine flexibility, and overall automation scalability.
Technical Specifications
| Parameter | Specification |
|---|
| Manufacturer | Allen Bradley |
| Product Family | ArmorPOINT I/O |
| Model Number | 1738-AENT |
| Module Type | EtherNet/IP Network Adapter |
| Communication Protocol | EtherNet/IP |
| Ethernet Ports | 2-Port Embedded Switch |
| Network Speed | 10/100 Mbps |
| Supported Topologies | Star, Linear, Device Level Ring (DLR dependent) |
| Maximum I/O Modules | Up to 63 ArmorPOINT modules |
| Input Voltage Range | 10–28.8V DC |
| Nominal Supply Voltage | 24V DC |
| Current Consumption | Approx. 400–500 mA |
| Power Dissipation | Approx. 6–8 W |
| Mounting Style | On-machine installation |
| Housing Protection | IP65 / IP66 / IP67 |
| Operating Temperature | -20°C to 60°C |
| Shock Resistance | Industrial-rated |
| Vibration Resistance | Industrial-rated |
| Dimensions | Approx. 165 mm × 75 mm × 55 mm |
| Weight | Approx. 0.9–1.1 kg |
Applications
The 1738-AENT is widely used in decentralized industrial automation systems requiring reliable EtherNet/IP communication close to the machine level.
Typical applications include:
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Automotive manufacturing systems
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Packaging and conveyor machinery
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Robotics and assembly lines
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Material handling systems
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Food and beverage production equipment
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Distributed machine-mounted I/O networks
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Heavy industrial automation systems
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OEM equipment integration
Its rugged ArmorPOINT construction makes it especially effective in environments where traditional cabinet-mounted I/O solutions are impractical.
Advantages
Rugged On-Machine Installation
The sealed industrial housing supports direct installation near machinery, reducing wiring distances and simplifying panel layouts.
High-Speed EtherNet/IP Communication
Provides stable real-time industrial Ethernet communication for distributed control architectures.
Reduced Wiring Complexity
Machine-level I/O placement minimizes long cable runs and improves installation efficiency.
Flexible Network Architecture
Supports multiple Ethernet topologies for adaptable industrial network design.
Scalable Distributed I/O Expansion
Supports up to 63 ArmorPOINT modules for large and modular automation systems.
Reliable Harsh Environment Performance
Designed to withstand industrial vibration, moisture, dust, and temperature fluctuations.
Technical FAQs
1. What is the primary function of the 1738-AENT?
It connects ArmorPOINT I/O modules to an EtherNet/IP industrial control network.
2. What communication protocol does it support?
It supports EtherNet/IP communication.
3. How many Ethernet ports are included?
The adapter includes two embedded Ethernet switch ports.
4. What is the maximum supported network speed?
It supports 10/100 Mbps Ethernet communication.
5. How many ArmorPOINT modules can it support?
It can support up to 63 ArmorPOINT I/O modules depending on system configuration.
6. Is it suitable for harsh industrial environments?
Yes. The unit is designed with IP65/IP66/IP67-rated protection for industrial use.
7. Can it be mounted directly on machinery?
Yes. It is specifically engineered for on-machine installation.
8. What controllers commonly work with this adapter?
It is commonly used with Allen Bradley ControlLogix and CompactLogix controllers.
9. What voltage does the adapter require?
It typically operates on a 24V DC industrial power supply.
10. What industries commonly use the 1738-AENT?
Automotive, packaging, robotics, logistics, and manufacturing industries frequently use this adapter.
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